MANUFACTURING METHOD FOR COMPOSITE MATERIAL

• Main Authors: YONEKAWA TSUBASA, MIKAMI EIICHI, TSUNODA MITSURU
• Format: Patent
• Language: English; Japanese
• Published: 13.12.2023
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; IMPREGNATING OR COATING OF PAPER; MAKING GRANULES OR PREFORMS; METALLURGY; METHODS OF PRODUCING PAPER THEREON; ORGANIC MACROMOLECULAR COMPOUNDS; PAPER NOT OTHERWISE PROVIDED FOR; PAPER-MAKING; PAPER-MAKING MACHINES; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; PRODUCTION OF CELLULOSE; PULP COMPOSITIONS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

To provide a manufacturing method for a composite material containing fibrous cellulose and resin, in which drying can be appropriately controlled in heating and drying using a heated cylindrical dryer, and in which an exfoliation property and strength are excellent and coloration is suppressed.SOLUTION: A manufacturing method for a composite material including fibrous cellulose and a resin, comprises a step of heating and drying a dispersion liquid of a mixture of the fibrous cellulose and the resin in an aqueous medium in a heated cylindrical dryer to obtain the composite material. In the step of obtaining the composite material, A expressed in formula (A) is heated and dried to fall into a range between 0.20 and 9.00, inclusive. A=ρ+Q/{k×w×v×(x/ρ)} (A).SELECTED DRAWING: Figure 1 【課題】繊維状セルロースと、樹脂とを含む複合材の製造方法であって、加熱円筒式乾燥機による加熱乾燥において適切に乾燥制御を行うことができ、剥離性及び強度に優れ、かつ着色が抑制された複合材を製造する方法を提供する。【解決手段】繊維状セルロースと、樹脂とを含む複合材の製造方法であって、前記繊維状セルロースと、前記樹脂との混合物の水系媒体への分散液を加熱円筒式乾燥機で加熱乾燥して前記複合材を得る工程を含み、前記複合材を得る工程において、式（Ａ）で表されるＡが０．２０以上９．００以下となるように前記分散液を加熱乾燥する、複合材の製造方法。Ａ＝ρ＋Ｑ／｛ｋ×ｗ×ｖ×（ｘ／ρ）｝ （Ａ）【選択図】図１